Struct BSplineSurface

pub struct BSplineSurface {
    pub u_degree: u16,
    pub v_degree: u16,
    pub control_points: Vec<Vec<Point3>>,
    pub u_knots: Vec<Scalar>,
    pub u_multiplicities: Vec<u32>,
    pub v_knots: Vec<Scalar>,
    pub v_multiplicities: Vec<u32>,
    pub weights: Option<Vec<Vec<Scalar>>>,
    pub u_closed: bool,
    pub v_closed: bool,
    pub knot_spec: KnotSpec,
    pub self_intersect: Option<bool>,
}

Tensor-product B-spline surface preserving exact knot and weight data.

Fields

u_degree: u16

Degree along the first parameter axis.

v_degree: u16

Degree along the second parameter axis.

control_points: Vec<Vec<Point3>>

Rectangular control net, row-major in u then v.

u_knots: Vec<Scalar>

Distinct knots along u.

u_multiplicities: Vec<u32>

Multiplicities matching u_knots.

v_knots: Vec<Scalar>

Distinct knots along v.

v_multiplicities: Vec<u32>

Multiplicities matching v_knots.

weights: Option<Vec<Vec<Scalar>>>

Optional rational weight net matching the control net shape.

u_closed: bool

Whether the surface closes along u.

v_closed: bool

Whether the surface closes along v.

knot_spec: KnotSpec

Source knot convention.

self_intersect: Option<bool>

Whether the source declares self intersection.

Implementations

impl BSplineSurface

pub fn domain(&self) -> Option<((Scalar, Scalar), (Scalar, Scalar))>

The parameter domain ((u0, u1), (v0, v1)), or None for a net or knot vector that does not describe a surface.

pub fn jet(&self, u: Scalar, v: Scalar) -> Option<SurfaceJet>

The point at (u, v) with its first and second partials, clamped to the domain; None for a malformed net or a zero weight.

Trait Implementations

impl Clone for BSplineSurface

fn clone(&self) -> BSplineSurface

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BSplineSurface

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for BSplineSurface

fn eq(&self, other: &BSplineSurface) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for BSplineSurface